With the fancy second slice of Haswell, we lost support for Ivybridge
with its paltry single slice.
Fixes: 8ddcfd6882a9 ("intel_l3_parity: slice support")
Testcase: igt/tools_test/sysfs_l3_parity
Signed-off-by: Chris Wilson <[email protected]>
---
tools/intel_l3_parity.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/tools/intel_l3_parity.c b/tools/intel_l3_parity.c
index d8c997af9..dc3d08048 100644
--- a/tools/intel_l3_parity.c
+++ b/tools/intel_l3_parity.c
@@ -195,6 +195,9 @@ int main(int argc, char *argv[])
for_each_slice(i) {
fd[i] = openat(dir, path[i], O_RDWR);
+ if (fd[i] < 0)
+ continue;
+
if (read(fd[i], l3logs[i], NUM_REGS * sizeof(uint32_t)) < 0) {
perror(path[i]);
exit(77);
@@ -333,6 +336,9 @@ int main(int argc, char *argv[])
/* Per slice operations */
for_each_slice(i) {
+ if (fd[i] < 0)
+ continue;
+
switch (action) {
case 'l':
dumpit(i);
@@ -374,6 +380,9 @@ int main(int argc, char *argv[])
exit(EXIT_SUCCESS);
for_each_slice(i) {
+ if (fd[i] < 0)
+ continue;
+
ret = write(fd[i], l3logs[i], NUM_REGS * sizeof(uint32_t));
if (ret == -1) {
perror("Writing sysfs");
--
2.22.0
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